Version 234.22 by Xiaoling on 2023/04/26 15:35
Show last authors
1 (% style="text-align:center" %)
2 [[image:image-20220613162008-1.png||_mstalt="428142" height="510" width="334"]]
3
4
5
6
7
8 **Table of Contents：**
9
10 {{toc/}}
11
12
13
14
15
16 = 1. Introduction =
17
18 == 1.1 What is LHT65N Temperature & Humidity Sensor ==
19
20
21 (((
22 The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% style="color:#4f81bd" %)**Temperature Sensor.**
23 )))
24
25 (((
26 The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
27 )))
28
29 (((
30 LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
31 )))
32
33 (((
34 LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
35 )))
36
37 (((
38 LHT65N supports (% style="color:#4f81bd" %)**Datalog Feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
39 )))
40
41 (((
42 *The actual battery life depends on how often to send data, please see the battery analyzer chapter.
43 )))
44
45
46 == 1.2 Features ==
47
48
49 * LoRaWAN v1.0.3 Class A protocol
50 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
51 * AT Commands to change parameters
52 * Remote configure parameters via LoRaWAN Downlink
53 * Firmware upgradeable via program port
54 * Built-in 2400mAh battery for up to 10 years of use.
55 * Built-in Temperature & Humidity sensor
56 * Optional External Sensors
57 * Tri-color LED to indicate working status
58 * Datalog feature (Max 3328 records)
59
60 == 1.3 Specification ==
61
62
63 (% style="color:#037691" %)**Built-in Temperature Sensor:**
64
65 * Resolution: 0.01 °C
66 * Accuracy Tolerance : Typ ±0.3 °C
67 * Long Term Drift: < 0.02 °C/yr
68 * Operating Range: -40 ~~ 85 °C
69
70 (% style="color:#037691" %)**Built-in Humidity Sensor:**
71
72 * Resolution: 0.04 %RH
73 * Accuracy Tolerance : Typ ±3 %RH
74 * Long Term Drift: < 0.02 °C/yr
75 * Operating Range: 0 ~~ 96 %RH
76
77 (% style="color:#037691" %)**External Temperature Sensor:**
78
79 * Resolution: 0.0625 °C
80 * ±0.5°C accuracy from -10°C to +85°C
81 * ±2°C accuracy from -55°C to +125°C
82 * Operating Range: -55 °C ~~ 125 °C
83
84 = 2. Connect LHT65N to IoT Server =
85
86 == 2.1 How does LHT65N work? ==
87
88
89 (((
90 LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
91 )))
92
93 (((
94 If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
95 )))
96
97
98 == 2.2 How to Activate LHT65N? ==
99
100
101 (((
102 The LHT65N has two working modes:
103 )))
104
105 * (((
106 (% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N doesn't have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
107 )))
108 * (((
109 (% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65N will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
110 )))
111
112 (((
113 The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
114 )))
115
116
117 [[image:image-20220515123819-1.png||_mstalt="430742" height="379" width="317"]]
118
119 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
120 |=(% style="width: 167px;background-color:#D9E2F3;color:#0070C0" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 225px;background-color:#D9E2F3;color:#0070C0" %)**Action**
121 |(% style="background-color:#f2f2f2; width:167px" %)Pressing ACT between 1s < time < 3s|(% style="background-color:#f2f2f2; width:117px" %)Test uplink status|(% style="background-color:#f2f2f2; width:225px" %)(((
122 If LHT65N is already Joined to rhe LoRaWAN network, LHT65N will send an uplink packet, if LHT65N has external sensor connected,(% style="color:blue" %)**Blue led** (%%)will blink once. If LHT65N has not external sensor, (% style="color:red" %)**Red led**(%%) will blink once.
123 )))
124 |(% style="background-color:#f2f2f2; width:167px" %)Pressing ACT for more than 3s|(% style="background-color:#f2f2f2; width:117px" %)Active Device|(% style="background-color:#f2f2f2; width:225px" %)(((
125 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network.
126 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after join in network.
127 )))
128 |(% style="background-color:#f2f2f2; width:167px" %)Fast press ACT 5 times.|(% style="background-color:#f2f2f2; width:117px" %)Deactivate Device|(% style="background-color:#f2f2f2; width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means LHT65N is in Deep Sleep Mode.
129
130 == 2.3 Example to join LoRaWAN network ==
131
132
133 (% class="wikigeneratedid" %)
134 This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure.
135
136
137 (% class="wikigeneratedid" %)
138 [[image:image-20220522232442-1.png||_mstalt="427830" height="387" width="648"]]
139
140
141 (((
142 Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network||_mstvisible="2"]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
143 )))
144
145
146 === 2.3.1 Step 1: Create Device n TTN ===
147
148
149 (((
150 Create a device in TTN V3 with the OTAA keys from LHT65N.
151 )))
152
153 (((
154 Each LHT65N is shipped with a sticker with its device EUI, APP Key and APP EUI as below:
155 )))
156
157 [[image:image-20230426083319-1.png]]
158
159 User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:
160
161 Add APP EUI in the application.
162
163
164 [[image:image-20220522232916-3.png||_mstalt="430495"]]
165
166
167 [[image:image-20220522232932-4.png||_mstalt="430157"]]
168
169
170 [[image:image-20220522232954-5.png||_mstalt="431847"]]
171
172
173
174 (% style="color:red" %)**Note: LHT65N use same payload as LHT65.**
175
176
177 [[image:image-20220522233026-6.png||_mstalt="429403"]]
178
179
180 Input APP EUI,  APP KEY and DEV EUI:
181
182
183 [[image:image-20220522233118-7.png||_mstalt="430430"]]
184
185
186 === 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
187
188
189 (((
190 Use ACT button to activate LHT65N and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
191 )))
192
193 [[image:image-20220522233300-8.png||_mstalt="428389" height="219" width="722"]]
194
195
196 == 2.4 Uplink Payload   ( Fport~=2) ==
197
198
199 (((
200 The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.
201 )))
202
203 (((
204 After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.
205 )))
206
207 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:390px" %)
208 |=(% style="width: 60px;background-color:#D9E2F3" %)(((
209 **Size(bytes)**
210 )))|=(% style="width: 30px;background-color:#D9E2F3" %)(((
211 **2**
212 )))|=(% style="width: 100px;background-color:#D9E2F3" %)(((
213 **2**
214 )))|=(% style="width: 100px;background-color:#D9E2F3" %)(((
215 **2**
216 )))|=(% style="width: 50px;background-color:#D9E2F3" %)(((
217 **1**
218 )))|=(% style="width: 50px;background-color:#D9E2F3" %)(((
219 **4**
220 )))
221 |(% style="width:97px" %)(((
222 **Value**
223 )))|(% style="width:39px" %)(((
224 [[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]
225 )))|(% style="width:100px" %)(((
226 (((
227 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
228 )))
229 )))|(% style="width:77px" %)(((
230 (((
231 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
232 )))
233 )))|(% style="width:47px" %)(((
234 [[Ext>>||anchor="H2.4.5Ext23"]] #
235 )))|(% style="width:51px" %)(((
236 [[Ext value>>||anchor="H2.4.6Extvalue"]]
237 )))
238
239 * The First 6 bytes: has fix meanings for every LHT65N.
240
241 * The 7th byte (EXT #): defines the external sensor model.
242
243 * The 8^^th^^ ~~ 11^^th^^ byte: the value for external sensor value. The definition is based on external sensor type. (If EXT=0, there won't be these four bytes.)
244
245 === 2.4.1 Decoder in TTN V3 ===
246
247
248 When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N decoder in TTNv3 for friendly reading.
249
250 Below is the position to put the decoder and LHT65N decoder can be download from here: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
251
252
253 [[image:image-20220522234118-10.png||_mstalt="451464" height="353" width="729"]]
254
255
256 === 2.4.2 BAT-Battery Info ===
257
258
259 These two bytes of BAT include the battery state and the actually voltage.
260
261 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:477px" %)
262 |=(% style="width: 69px; background-color:#D9E2F3;color:#0070C0" %)(((
263 **Bit(bit)**
264 )))|=(% style="width: 253px;background-color:#D9E2F3;color:#0070C0" %)[15:14]|=(% style="width: 155px;background-color:#D9E2F3;color:#0070C0" %)[13:0]
265 |(% style="width:66px" %)(((
266 **Value**
267 )))|(% style="width:250px" %)(((
268 BAT Status
269 00(b): Ultra Low ( BAT <= 2.50v)
270 01(b): Low (2.50v <=BAT <= 2.55v)
271 10(b): OK (2.55v <= BAT <=2.65v)
272 11(b): Good (BAT >= 2.65v)
273 )))|(% style="width:152px" %)Actually BAT voltage
274
275 **(b)stands for binary**
276
277
278 [[image:image-20220522235639-1.png||_mstalt="431392" height="139" width="727"]]
279
280
281 Check the battery voltage for LHT65N.
282
283 * BAT status=(0Xcba4>>14)&0xFF=11 (BIN) ，very good
284
285 * Battery Voltage =0xCBA4&0x3FFF=0x0BA4=2980mV
286
287 === 2.4.3 Built-in Temperature ===
288
289
290 [[image:image-20220522235639-2.png||_mstalt="431756" height="138" width="722"]]
291
292 * Temperature:  0x0ABB/100=27.47℃
293
294 [[image:image-20220522235639-3.png||_mstalt="432120"]]
295
296 * Temperature:  (0xF5C6-65536)/100=-26.18℃
297
298 === 2.4.4 Built-in Humidity ===
299
300
301 [[image:image-20220522235639-4.png||_mstalt="432484" height="138" width="722"]]
302
303 * Humidity:    0x025C/10=60.4%
304
305 === 2.4.5 Ext # ===
306
307
308 Bytes for External Sensor:
309
310 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:425px" %)
311 |=(% style="width: 102px; background-color:#D9E2F3;color:#0070C0" %)**EXT # Value**|=(% style="width: 323px;background-color:#D9E2F3;color:#0070C0" %)**External Sensor Type**
312 |(% style="width:102px" %)0x01|(% style="width:319px" %)Sensor E3, Temperature Sensor
313 |(% style="width:102px" %)0x09|(% style="width:319px" %)Sensor E3, Temperature Sensor, Datalog Mod
314
315 === 2.4.6 Ext value ===
316
317 ==== 2.4.6.1 Ext~=1, E3 Temperature Sensor ====
318
319
320 [[image:image-20220522235639-5.png||_mstalt="432848"]]
321
322
323 * DS18B20 temp=0x0ADD/100=27.81℃
324
325 The last 2 bytes of data are meaningless
326
327
328
329 [[image:image-20220522235639-6.png||_mstalt="433212"]]
330
331
332 * External temperature= (0xF54F-65536)/100=-27.37℃
333
334 F54F :  (F54F & 8000 == 1) , temp = (F54F - 65536)/100 = 27.37℃
335
336 （0105 & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative）
337
338 The last 2 bytes of data are meaningless
339
340 If the external sensor is 0x01, and there is no external temperature connected. The temperature will be set to 7FFF which is 327.67℃
341
342
343
344 ==== 2.4.6.2 Ext~=9, E3 sensor with Unix Timestamp ====
345
346
347 (((
348 Timestamp mode is designed for LHT65N with E3 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
349 )))
350
351
352 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
353 |=(% style="width: 50px;background-color:#D9E2F3" %)(((
354 **Size(bytes)**
355 )))|=(% style="width: 70px;background-color:#D9E2F3" %)(((
356 **2**
357 )))|=(% style="width: 120px;background-color:#D9E2F3" %)(((
358 **2**
359 )))|=(% style="width: 120px;background-color:#D9E2F3" %)(((
360 **2**
361 )))|=(% style="width: 50px;background-color:#D9E2F3" %)(((
362 **1**
363 )))|=(% style="width: 70px;background-color:#D9E2F3" %)(((
364 **4**
365 )))
366 |(% style="width:110px" %)(((
367 **Value**
368 )))|(% style="width:71px" %)(((
369 [[External temperature>>||anchor="H4.2SetExternalSensorMode"]]
370 )))|(% style="width:99px" %)(((
371 [[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]
372 )))|(% style="width:132px" %)(((
373 BAT Status & [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
374 )))|(% style="width:54px" %)(((
375 Status & Ext
376 )))|(% style="width:64px" %)(((
377 [[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
378 )))
379
380 * **Battery status & Built-in Humidity**
381
382 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:461px" %)
383 |=(% style="width: 69px;background-color:#D9E2F3;color:#0070C0" %)Bit(bit)|=(% style="width: 258px;background-color:#D9E2F3;color:#0070C0" %)[15:14]|=(% style="width: 134px;background-color:#D9E2F3;color:#0070C0" %)[11:0]
384 |(% style="width:67px" %)**Value**|(% style="width:256px" %)(((
385 BAT Status
386 00(b): Ultra Low ( BAT <= 2.50v)
387 01(b): Low  (2.50v <=BAT <= 2.55v)
388 10(b): OK   (2.55v <= BAT <=2.65v)
389 11(b): Good   (BAT >= 2.65v)
390 )))|(% style="width:132px" %)(((
391 [[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]
392 )))
393
394 * **Status & Ext Byte**
395
396 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
397 |=(% style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)**Bits**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**7**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**6**|(% style="background-color:#d9e2f3; color:#0070c0; width:90px" %)**5**|(% style="background-color:#d9e2f3; color:#0070c0; width:100px" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**[3:0]**
398 |=(% style="width: 96px;" %)**Status&Ext**|(% style="width:124px" %)None-ACK Flag|(% style="width:146px" %)Poll Message FLAG|(% style="width:109px" %)Sync time OK|(% style="width:143px" %)Unix Time Request|(% style="width:106px" %)Ext: 0b(1001)
399
400 * (% style="color:blue" %)**Poll Message Flag**:(%%)  1: This message is a poll message reply, 0: means this is a normal uplink.
401 * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
402 * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
403
404 ==== 2.4.6.3 Ext~=6, ADC Sensor (use with E2 Cable) ====
405
406
407 In this mode, user can connect external ADC sensor to check ADC value. The 3V3_OUT can
408
409 be used to power the external ADC sensor; user can control the power on time for this
410
411 (% style="color:blue" %)**sensor by setting:**
412
413 **AT+EXT=6,timeout**  (% style="color:red" %)**Time to power this sensor, from 0 ~~ 65535ms**
414
415 **For example:**
416
417 AT+EXT=6,1000 will power this sensor for 1000ms before sampling the ADC value.
418
419
420 Or use **downlink command A2** to set the same.
421
422 The measuring range of the node is only about 0.1V to 1.1V The voltage resolution is about 0.24mv.
423
424 When the measured output voltage of the sensor is not within the range of 0.1V and 1.1V, the output voltage terminal of the sensor shall be divided The example in the following figure is to reduce the output voltage of the sensor by three times If it is necessary to reduce more times, calculate according to the formula in the figure and connect the corresponding resistance in series.
425
426 [[image:image-20220628150112-1.png||_mstalt="427414" height="241" width="285"]]
427
428
429 When ADC_IN1 pin is connected to GND or suspended, ADC value is 0
430
431 [[image:image-20220628150714-4.png||_mstalt="431054"]]
432
433
434 When the voltage collected by ADC_IN1 is less than the minimum range, the minimum range will be used as the output; Similarly, when the collected voltage is greater than the maximum range, the maximum range will be used as the output.
435
436
437 1) The minimum range is about 0.1V. Each chip has internal calibration, so this value is close to 0.1V
438
439 [[image:image-20220628151005-5.png||_mstalt="429546"]]
440
441
442 2) The maximum range is about 1.1V. Each chip has internal calibration, so this value is close to 1.1v
443
444 [[image:image-20220628151056-6.png||_mstalt="431873"]]
445
446
447 3) Within range
448
449 [[image:image-20220628151143-7.png||_mstalt="431210"]]
450
451
452
453 ==== 2.4.6.4 Ext~=2 TMP117 Sensor （Since Firmware v1.3） ====
454
455
456 [[image:image-20220927095645-1.png||_mstalt="433771" height="534" width="460"]]
457
458
459 (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
460
461 [[image:image-20220906102307-7.png||_mstalt="430443"]]
462
463
464 (% style="color:blue" %)**Interrupt Mode and Counting Mode:**
465
466 The external cable NE2 can be use for MOD4 and MOD8
467
468
469
470 ==== 2.4.6.5 Ext~=4 Interrupt Mode （Since Firmware v1.3） ====
471
472
473 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will send an uplink when there is a trigger.**
474
475
476 (% style="color:blue" %)**Interrupt Mode can be used to connect to external interrupt sensors such as:**
477
478 (% style="color:#037691" %)**Case 1: Door Sensor.** (%%)3.3v Out for such sensor is just to detect Open/Close.
479
480 In Open State, the power consumption is the same as if there is no probe
481
482 In Close state, the power consumption will be 3uA higher than normal.
483
484 [[image:image-20220906100852-1.png||_mstalt="429156" height="205" width="377"]]
485
486
487 Ext=4,Interrupt Sensor：
488
489 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:504px" %)
490 |(% style="width:101px" %)(((
491 **AT+EXT=4,1**
492 )))|(% style="width:395px" %)(((
493 **Sent uplink packet in both rising and falling interrupt**
494 )))
495 |(% style="width:101px" %)(((
496 **AT+EXT=4,2**
497 )))|(% style="width:395px" %)(((
498 **Sent uplink packet only in falling interrupt**
499 )))
500 |(% style="width:101px" %)(((
501 **AT+EXT=4,3**
502 )))|(% style="width:395px" %)(((
503 **Sent uplink packet only in rising interrupt**
504 )))
505
506 Trigger by falling edge:
507
508 [[image:image-20220906101145-2.png||_mstalt="428324"]]
509
510
511 Trigger by raising edge：
512
513 [[image:image-20220906101145-3.png||_mstalt="428688"]]
514
515
516
517 ==== 2.4.6.6 Ext~=8 Counting Mode（Since Firmware v1.3） ====
518
519
520 (% style="color:red" %)**Note: In this mode, 3.3v output will be always ON. LHT65N will count for every interrupt and uplink periodically.**
521
522
523 (% style="color:blue" %)**Case 1**(%%):  Low power consumption Flow Sensor, such flow sensor has pulse output and the power consumption in uA level and can be powered by LHT65N.
524
525 [[image:image-20220906101320-4.png||_mstalt="427336" height="366" width="698"]]
526
527
528 (% style="color:blue" %)**Case 2**(%%):  Normal Flow Sensor: Such flow sensor has higher power consumption and is not suitable to be powered by LHT65N. It is powered by external power and output <3.3v pulse
529
530 [[image:image-20220906101320-5.png||_mstalt="427700" height="353" width="696"]]
531
532
533 Ext=8, Counting Sensor ( 4 bytes)：
534
535 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:330px" %)
536 |(% style="width:131px" %)(((
537 **AT+EXT=8,0**
538 )))|(% style="width:195px" %)(((
539 **Count at falling interrupt**
540 )))
541 |(% style="width:131px" %)(((
542 **AT+EXT=8,1**
543 )))|(% style="width:195px" %)(((
544 **Count at rising interrupt**
545 )))
546 |(% style="width:131px" %)(((
547 **AT+SETCNT=60**
548 )))|(% style="width:195px" %)(((
549 **Sent current count to 60**
550 )))
551
552 [[image:image-20220906101320-6.png||_mstalt="428064"]]
553
554
555 (% style="color:blue" %)**A2 downlink Command：**
556
557 A2 02:  Same as AT+EXT=2 (AT+EXT= second byte)
558
559 A2 06 01 F4:  Same as AT+EXT=6,500 (AT+EXT= second byte, third and fourth bytes)
560
561 A2 04 02:  Same as AT+EXT=4,2 (AT+EXT= second byte, third byte)
562
563 A2 08 01 00:  Same as AT+EXT=8,0 (AT+EXT= second byte, fourth byte)
564
565 A2 08 02 00 00 00 3C:  Same as AT+ SETCNT=60  (AT+ SETCNT = 4th byte and 5th byte and 6th byte and 7th byte)
566
567
568 == 2.5 Show data on Datacake ==
569
570
571 (((
572 Datacake IoT platform provides a human-friendly interface to show the sensor data, once we have sensor data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
573 )))
574
575
576 (((
577 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.
578 )))
579
580 (((
581 (% style="color:blue" %)**Step 2**(%%): Configure your Application to forward data to Datacake you will need to add integration. Go to TTN V3 Console ~-~-> Applications ~-~-> Integrations ~-~-> Add Integrations.
582 )))
583
584
585 (((
586 Add Datacake:
587 )))
588
589
590 [[image:image-20220523000825-7.png||_mstalt="429884" height="262" width="583"]]
591
592
593
594 Select default key as Access Key:
595
596
597 [[image:image-20220523000825-8.png||_mstalt="430248" height="453" width="406"]]
598
599
600 In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.
601
602
603 [[image:image-20220523000825-9.png||_mstalt="430612" height="366" width="392"]]
604
605
606 [[image:image-20220523000825-10.png||_mstalt="450619" height="413" width="728"]]
607
608
609 == 2.6 Datalog Feature ==
610
611
612 (((
613 Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, LHT65N will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65N.
614 )))
615
616
617 === 2.6.1 Ways to get datalog via LoRaWAN ===
618
619
620 There are two methods:
621
622 (% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.
623
624
625 (% style="color:blue" %)**Method 2: **(%%)Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
626
627
628 (% style="color:red" %)**Note for method 2:**
629
630 * a) LHT65N will do an ACK check for data records sending to make sure every data arrive server.
631 * b) LHT65N will send data in **CONFIRMED Mode** when PNACKMD=1, but LHT65N won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if LHT65N gets a ACK, LHT65N will consider there is a network connection and resend all NONE-ACK Message.
632
633 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
634
635
636 [[image:image-20220703111700-2.png||_mstalt="426244" height="381" width="1119"]]
637
638
639 === 2.6.2 Unix TimeStamp ===
640
641
642 LHT65N uses Unix TimeStamp format based on
643
644
645 [[image:image-20220523001219-11.png||_mstalt="450450" height="97" width="627"]]
646
647
648
649 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
650
651 Below is the converter example
652
653 [[image:image-20220523001219-12.png||_mstalt="450827" height="298" width="720"]]
654
655
656 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
657
658
659 === 2.6.3 Set Device Time ===
660
661
662 (((
663 (% style="color:blue" %)**There are two ways to set device's time:**
664 )))
665
666 (((
667 **1.  Through LoRaWAN MAC Command (Default settings)**
668 )))
669
670 (((
671 User need to set SYNCMOD=1 to enable sync time via MAC command.
672 )))
673
674 (((
675 Once LHT65N Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to LHT65N. If LHT65N fails to get the time from the server, LHT65N will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
676 )))
677
678 (((
679 (% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**
680 )))
681
682
683 (((
684 **2. Manually Set Time**
685 )))
686
687 (((
688 User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
689 )))
690
691
692 === 2.6.4 Poll sensor value ===
693
694
695 User can poll sensor value based on timestamps from the server. Below is the downlink command.
696
697 [[image:image-20220523152302-15.png||_mstalt="451581"]]
698
699
700 Timestamp start and Timestamp end use Unix TimeStamp format as mentioned above. Devices will reply with all data log during this time period, use the uplink interval.
701
702 For example, downlink command (% _mstmutation="1" %)**31 5FC5F350 5FC6 0160 05**(%%)
703
704 Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00's data
705
706 Uplink Internal =5s，means LHT65N will send one packet every 5s. range 5~~255s.
707
708
709 === 2.6.5 Datalog Uplink payload ===
710
711
712 The Datalog poll reply uplink will use below payload format.
713
714 **Retrieval data payload:**
715
716 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)
717 |=(% style="width: 60px;" %)(((
718 **Size(bytes)**
719 )))|=(% style="width: 90px;" %)**2**|=(% style="width: 90px;" %)**2**|=(% style="width: 70px;" %)**2**|=(% style="width: 100px;" %)**1**|=(% style="width: 70px;" %)**4**
720 |(% style="width:97px" %)**Value**|(% style="width:123px" %)[[External sensor data>>||anchor="H2.4.6Extvalue"]]|(% style="width:108px" %)[[Built In Temperature>>||anchor="H2.4.3Built-inTemperature"]]|(% style="width:133px" %)[[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]|(% style="width:159px" %)Poll message flag & Ext|(% style="width:80px" %)[[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]
721
722 **Poll message flag & Ext:**
723
724 [[image:image-20221006192726-1.png||_mstalt="430508" height="112" width="754"]]
725
726 (% style="color:blue" %)**No ACK Message**(%%):  1: This message means this payload is fromn Uplink Message which doesn't get ACK from the server before ( for [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]] feature)
727
728 (% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.
729
730 * Poll Message Flag is set to 1.
731
732 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
733
734 For example, in US915 band, the max payload for different DR is:
735
736 (% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data
737
738 (% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
739
740 (% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data
741
742 (% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.
743
744 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
745
746
747 **Example:**
748
749 If LHT65N has below data inside Flash:
750
751 [[image:image-20220523144455-1.png||_mstalt="430040" height="335" width="735"]]
752
753
754 If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705
755
756 Where : Start time: 60065F97 = time 21/1/19 04:27:03
757
758 Stop time: 60066DA7= time 21/1/19 05:27:03
759
760
761 **LHT65N will uplink this payload.**
762
763 [[image:image-20220523001219-13.png||_mstalt="451204" height="421" style="text-align:left" width="727"]]
764
765
766 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
767
768 Where the first 11 bytes is for the first entry:
769
770 7FFF089801464160065F97
771
772 Ext sensor data=0x7FFF/100=327.67
773
774 Temp=0x088E/100=22.00
775
776 Hum=0x014B/10=32.6
777
778 poll message flag & Ext=0x41,means reply data,Ext=1
779
780 Unix time is 0x60066009=1611030423s=21/1/19 04:27:03
781
782
783 == 2.7 Alarm Mode & Feature "Multi sampling, one uplink" ==
784
785
786 (((
787 when the device is in alarm mode, it checks the built-in sensor temperature for a short time. if the temperature exceeds the preconfigured range, it sends an uplink immediately.
788 )))
789
790 (((
791 (% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**
792
793
794 === 2.7.1 ALARM MODE ( Since v1.3.1 firmware) ===
795
796
797 **Internal GXHT30 temperature alarm（Acquisition time: fixed at one minute）**
798
799 (((
800 (% class="box infomessage" %)
801 (((
802 **AT+WMOD=3**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
803
804 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
805
806 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
807
808 (% _mstmutation="1" %)**AT+ARTEMP=？ **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
809
810 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
811
812 **AT+LEDALARM=1** :       Enable LED visual Alarm.
813 )))
814 )))
815
816 (% style="color:#4f81bd" %)**Downlink Command:**
817
818 AT+WMOD=1:  A501  ,  AT+WMOD=0 :  A600
819
820 AT+CITEMP=1 : A60001
821
822 AT+ARTEMP=1,60  :  A70001003C
823
824 AT+ARTEMP=-16,60 :  A7FFF0003C
825
826 AT+LEDALARM=1  :  3601
827
828
829 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
830
831 Total bytes: 8 bytes
832
833 **Example: **AA0100010001003C
834
835 WMOD=01
836
837 CITEMP=0001
838
839 TEMPlow=0001
840
841 TEMPhigh=003C
842
843
844 **DS18B20 and TMP117 Threshold Alarm**
845
846 **~ AT+WMOD=1,60,-10,20**
847
848 (% style="color:#4f81bd" %)**Downlink Command:**
849
850 **Example: **A5013CFC180014
851
852 MOD=01
853
854 CITEMP=3C(S)
855
856 TEMPlow=FC18
857
858 TEMPhigh=0014
859
860
861 **Fluctuation alarm for DS18B20 and TMP117（Acquisition time: minimum 1s）**
862
863 **AT+WMOD=2,60,5** 
864
865 (% style="color:#4f81bd" %)**Downlink Command:**
866
867 **Example: **A5023C05
868
869 MOD=02
870
871 CITEMP=3C(S)
872
873 temperature fluctuation=05
874
875
876 **Sampling multiple times and uplink together**
877
878 **AT+WMOD=3,1,60,20,-16,32,1**   
879
880 Explain:
881
882 * (% style="color:#037691" %)**parameter1:**(%%)Set Working Mode to **Mode 3**
883 * (% style="color:#037691" %)**parameter2:**(%%) Set the temperature sampling mode to** 1**(1:DS18B20;2:TMP117;3:** **Internal GXHT30).
884 * (% style="color:#037691" %)**parameter3:**(%%)Sampling Interval is **60**s.
885 * (% style="color:#037691" %)**parameter4:**(%%)When there is **20** sampling dats, Device will send these data via one uplink. (max value is 60, means max 60 sampling in one uplink)
886 * (% style="color:#037691" %)**parameter5 & parameter6:**(%%)Temperature alarm range is **-16** to **32**°C,
887 * (% style="color:#037691" %)**parameter7:**(%%) 1 to enable temperature alarm, **0** to disable the temperature alarm. If alarm is enabled, a data will be sent immediately  if temperate exceeds the Alarm range.
888
889 (% style="color:#4f81bd" %)**Downlink Command:**
890
891 **Example: **A50301003C14FFF0002001
892
893 MOD=03
894
895 TEMP=DS18B20
896
897 CITEMP=003C(S)
898
899 Total number of acquisitions=14
900
901 TEMPlow=FFF0
902
903 TEMPhigh=0020
904
905 ARTEMP=01
906
907 **Uplink payload( Fport=3)**
908
909 **Example: CBEA**01**0992**//0A41//**09C4**
910
911 BatV=CBEA
912
913 TEMP=DS18B20
914
915 Temp1=0992  ~/~/ 24.50℃
916
917 Temp2=0A41  ~/~/ 26.25℃
918
919 Temp3=09C4  ~/~/ 25.00℃
920
921 (% style="color:red" %)**Note: This uplink will automatically select the appropriate DR according to the data length**
922
923 (% style="color:red" %)** In this mode, the temperature resolution of ds18b20 is 0.25℃ to save power consumption**
924 )))
925
926
927 === 2.7.2 ALARM MODE ( Before v1.3.1 firmware) ===
928
929
930 (% class="box infomessage" %)
931 (((
932 (((
933 **AT+WMOD=1**:  Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)
934 )))
935
936 (((
937 **AT+CITEMP=1**:  The interval between checking the alarm temperature. (In minutes)
938 )))
939
940 (((
941 **AT+ARTEMP**:  Gets or sets the alarm range of the internal temperature sensor
942 )))
943
944 (((
945 (% _mstmutation="1" %)**AT+ARTEMP=？ **(%%):  Gets the alarm range of the internal temperature sensor(% style="display:none" %)
946 )))
947
948 (((
949 **AT+ARTEMP=45,105**:  Set the internal temperature sensor alarm range from 45 to 105.
950 )))
951 )))
952
953 (% style="color:#4f81bd" %)**Downlink Command: AAXXXXXXXXXXXXXX**
954
955 Total bytes: 8 bytes
956
957 **Example:**AA0100010001003C
958
959 WMOD=01
960
961 CITEMP=0001
962
963 TEMPlow=0001
964
965 TEMPhigh=003C
966
967
968 == 2.8 LED Indicator ==
969
970
971 The LHT65 has a triple color LED which for easy showing different stage .
972
973 While user press ACT button, the LED will work as per LED status with ACT button.
974
975 In a normal working state:
976
977 * For each uplink, the BLUE LED or RED LED will blink once.
978 BLUE LED when external sensor is connected.
979 * RED LED when external sensor is not connected
980 * For each success downlink, the PURPLE LED will blink once
981
982 == 2.9 installation ==
983
984
985 [[image:image-20220516231650-1.png||_mstalt="428597" height="436" width="428"]]
986
987
988 = 3. Sensors and Accessories =
989
990 == 3.1 E2 Extension Cable ==
991
992
993 [[image:image-20220619092222-1.png||_mstalt="429533" height="182" width="188"]][[image:image-20220619092313-2.png||_mstalt="430222" height="182" width="173"]]
994
995
996 **1m long breakout cable for LHT65N. Features:**
997
998 * (((
999 Use for AT Command， works for both LHT52/LHT65N
1000 )))
1001 * (((
1002 Update firmware for LHT65N, works for both LHT52/LHT65N
1003 )))
1004 * (((
1005 Supports ADC mode to monitor external ADC
1006 )))
1007 * (((
1008 Supports Interrupt mode
1009 )))
1010 * (((
1011 Exposed All pins from the LHT65N Type-C connector.
1012
1013
1014
1015 )))
1016
1017 [[image:image-20220619092421-3.png||_mstalt="430547" height="371" width="529"]]
1018
1019
1020 == 3.2 E3 Temperature Probe ==
1021
1022
1023 [[image:image-20220515080154-4.png||_mstalt="434681" alt="photo-20220515080154-4.png" height="182" width="161"]] [[image:image-20220515080330-5.png||_mstalt="428792" height="201" width="195"]]
1024
1025
1026 Temperature sensor with 2 meters cable long
1027
1028 * Resolution: 0.0625 °C
1029 * ±0.5°C accuracy from -10°C to +85°C
1030 * ±2°C accuracy from -55°C to +125°C
1031 * Operating Range: -40 ~~ 125 °C
1032 * Working voltage 2.35v ~~ 5v
1033
1034 = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1035
1036
1037 (((
1038 Use can configure LHT65N via AT Command or LoRaWAN Downlink.
1039 )))
1040
1041 * (((
1042 AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].
1043 )))
1044
1045 * (((
1046 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
1047 )))
1048
1049 (((
1050 There are two kinds of commands to configure LHT65N, they are:
1051 )))
1052
1053 * (((
1054 (% style="color:#4f81bd" %)**General Commands**.
1055 )))
1056
1057 (((
1058 These commands are to configure:
1059 )))
1060
1061 1. (((
1062 General system settings like: uplink interval.
1063 )))
1064 1. (((
1065 LoRaWAN protocol & radio-related commands.
1066 )))
1067
1068 (((
1069 They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~*~*). These commands can be found on the wiki: [[End Device Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
1070 )))
1071
1072 * (((
1073 (% style="color:#4f81bd" %)**Commands special design for LHT65N**
1074 )))
1075
1076 (((
1077 These commands are only valid for LHT65N, as below:
1078 )))
1079
1080
1081 == 4.1 Set Transmit Interval Time ==
1082
1083
1084 Feature: Change LoRaWAN End Node Transmit Interval.
1085
1086
1087 (% style="color:#4f81bd" %)**AT Command: AT+TDC**
1088
1089 [[image:image-20220523150701-2.png||_mstalt="427453"]]
1090
1091
1092 (% style="color:#4f81bd" %)**Downlink Command: 0x01**
1093
1094 Format: Command Code (0x01) followed by 3 bytes time value.
1095
1096 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
1097
1098 * **Example 1**: Downlink Payload: 0100001E  ~/~/ Set Transmit Interval (TDC) = 30 seconds
1099
1100 * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1101
1102 == 4.2 Set External Sensor Mode ==
1103
1104
1105 Feature: Change External Sensor Mode.
1106
1107
1108 (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1109
1110 [[image:image-20220523150759-3.png||_mstalt="432146"]]
1111
1112
1113 (% style="color:#4f81bd" %)**Downlink Command: 0xA2**
1114
1115 Total bytes: 2 ~~ 5 bytes
1116
1117 **Example:**
1118
1119 * 0xA201: Set external sensor type to E1
1120
1121 * 0xA209: Same as AT+EXT=9
1122
1123 * 0xA20702003c: Same as AT+SETCNT=60
1124
1125 == 4.3 Enable/Disable uplink Temperature probe ID ==
1126
1127
1128 (((
1129 Feature: If PID is enabled, device will send the temperature probe ID on:
1130 )))
1131
1132 * (((
1133 First Packet after OTAA Join
1134 )))
1135 * (((
1136 Every 24 hours since the first packet.
1137 )))
1138
1139 (((
1140 PID is default set to disable (0)
1141
1142
1143 )))
1144
1145 (% style="color:#4f81bd" %)**AT Command:**
1146
1147 [[image:image-20220523150928-4.png||_mstalt="431821"]]
1148
1149
1150 (% style="color:#4f81bd" %)**Downlink Command:**
1151
1152 * **0xA800**  **~-~->** AT+PID=0
1153 * **0xA801**     **~-~->** AT+PID=1
1154
1155 == 4.4 Set Password ==
1156
1157
1158 Feature: Set device password, max 9 digits
1159
1160
1161 (% style="color:#4f81bd" %)**AT Command: AT+PWORD**
1162
1163 [[image:image-20220523151052-5.png||_mstalt="428623"]]
1164
1165
1166 (% style="color:#4f81bd" %)**Downlink Command:**
1167
1168 No downlink command for this feature.
1169
1170
1171 == 4.5 Quit AT Command ==
1172
1173
1174 Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.
1175
1176
1177 (% style="color:#4f81bd" %)**AT Command: AT+DISAT**
1178
1179 [[image:image-20220523151132-6.png||_mstalt="428649"]]
1180
1181
1182 (% style="color:#4f81bd" %)**Downlink Command:**
1183
1184 No downlink command for this feature.
1185
1186
1187 == 4.6 Set to sleep mode ==
1188
1189
1190 Feature: Set device to sleep mode
1191
1192 * **AT+Sleep=0**  : Normal working mode, device will sleep and use lower power when there is no LoRa message
1193 * **AT+Sleep=1** :  Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.
1194
1195 (% style="color:#4f81bd" %)**AT Command: AT+SLEEP**
1196
1197 [[image:image-20220523151218-7.png||_mstalt="430703"]]
1198
1199
1200 (% style="color:#4f81bd" %)**Downlink Command:**
1201
1202 * There is no downlink command to set to Sleep mode.
1203
1204 == 4.7 Set system time ==
1205
1206
1207 Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]
1208
1209
1210 (% style="color:#4f81bd" %)**AT Command:**
1211
1212 [[image:image-20220523151253-8.png||_mstalt="430677"]]
1213
1214
1215 (% style="color:#4f81bd" %)**Downlink Command:**
1216
1217 0x306007806000  ~/~/  Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352
1218
1219
1220 == 4.8 Set Time Sync Mode ==
1221
1222
1223 (((
1224 Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.
1225 )))
1226
1227 (((
1228 SYNCMOD is set to 1 by default. If user want to set a different time from LoRaWAN server, user need to set this to 0.
1229
1230
1231 )))
1232
1233 (% style="color:#4f81bd" %)**AT Command:**
1234
1235 [[image:image-20220523151336-9.png||_mstalt="431717"]]
1236
1237
1238 (% style="color:#4f81bd" %)**Downlink Command:**
1239
1240 0x28 01  ~/~/  Same As AT+SYNCMOD=1
1241 0x28 00  ~/~/  Same As AT+SYNCMOD=0
1242
1243
1244 == 4.9 Set Time Sync Interval ==
1245
1246
1247 Feature: Define System time sync interval. SYNCTDC default value: 10 days.
1248
1249
1250 (% style="color:#4f81bd" %)**AT Command:**
1251
1252 [[image:image-20220523151411-10.png||_mstalt="449696"]]
1253
1254
1255 (% style="color:#4f81bd" %)**Downlink Command:**
1256
1257 **0x29 0A**  ~/~/ Same as AT+SYNCTDC=0x0A
1258
1259
1260 == 4.10 Print data entries base on page. ==
1261
1262
1263 Feature: Print the sector data from start page to stop page (max is 416 pages).
1264
1265
1266 (% style="color:#4f81bd" %)**AT Command: AT+PDTA**
1267
1268 [[image:image-20220523151450-11.png||_mstalt="451035"]]
1269
1270
1271 (% style="color:#4f81bd" %)**Downlink Command:**
1272
1273 No downlink commands for feature
1274
1275
1276 == 4.11 Print last few data entries. ==
1277
1278
1279 Feature: Print the last few data entries
1280
1281
1282 (% style="color:#4f81bd" %)**AT Command: AT+PLDTA**
1283
1284 [[image:image-20220523151524-12.png||_mstalt="452101"]]
1285
1286
1287 (% style="color:#4f81bd" %)**Downlink Command:**
1288
1289 No downlink commands for feature
1290
1291
1292 == 4.12 Clear Flash Record ==
1293
1294
1295 Feature: Clear flash storage for data log feature.
1296
1297
1298 (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1299
1300 [[image:image-20220523151556-13.png||_mstalt="454129"]]
1301
1302
1303 (% style="color:#4f81bd" %)**Downlink Command: 0xA3**
1304
1305 * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1306
1307 == 4.13 Auto Send None-ACK messages ==
1308
1309
1310 Feature: LHT65N will wait for ACK for each uplink, If LHT65N doesn't get ACK from the IoT server, it will consider the message doesn't arrive server and store it. LHT65N keeps sending messages in normal periodically. Once LHT65N gets ACK from a server, it will consider the network is ok and start to send the not-arrive message.
1311
1312
1313 (% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**
1314
1315 The default factory setting is 0
1316
1317 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:367px" %)
1318 |=(% style="width: 158px;" %)**Command Example**|=(% style="width: 118px;" %)**Function**|=(% style="width: 87px;" %)**Response**
1319 |(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK
1320
1321 (% style="color:#4f81bd" %)**Downlink Command: 0x34**
1322
1323 * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1324
1325 == 4.14 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm（Since firmware 1.3.0） ==
1326
1327
1328 Feature: Set internal and external temperature sensor alarms.
1329
1330 (% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)
1331 |=(% style="width: 250px;" %)**Command Example**|=(% style="width: 200px;" %)**Function**|=(% style="width: 50px;" %)**Response**
1332 |(% style="width:268px" %)AT+WMOD=parameter1,parameter2,parameter3,parameter4|(% style="width:255px" %)Set internal and external temperature sensor alarms|(% style="width:181px" %)OK
1333
1334 (% style="color:#037691" %)**AT+WMOD=parameter1,parameter2,parameter3,parameter4**
1335
1336 (% style="color:#037691" %)**Parameter 1**(%%):  Alarm mode:
1337
1338 0): Cancel
1339
1340 1): Threshold alarm
1341
1342 2): Fluctuation alarm
1343
1344
1345 (% style="color:#037691" %)** Parameter 2**(%%):  Sampling time. Unit: seconds, up to 255 seconds.
1346
1347 (% style="color:red" %)**Note: When the collection time is less than 60 seconds and always exceeds the set alarm threshold, the sending interval will not be the collection time, but will be sent every 60 seconds.**
1348
1349
1350 (% style="color:#037691" %) **Parameter 3 and parameter 4:**
1351
1352 1):  If Alarm Mode is set to 1: Parameter 3 and parameter 4 are valid, as before, they represent low temperature and high temperature.
1353
1354 Such as AT+WMOD=1,60,45,105, it means high and low temperature alarm.
1355
1356
1357 2):  If Alarm Mode is set to 2: Parameter 3 is valid, which represents the difference between the currently collected temperature and the last uploaded temperature.
1358
1359 Such as AT+WMOD=2,10,2,it means that it is a fluctuation alarm.
1360
1361 If the difference between the current collected temperature and the last Uplin is ±2 degrees, the alarm will be issued.
1362
1363
1364 (% style="color:#4f81bd" %)**Downlink Command: 0xA5**
1365
1366 0xA5 00 ~-~- AT+WMOD=0.
1367
1368 0xA5 01 0A 11 94 29 04 ~-~- AT+WMOD=1,10,45,105  (AT+WMOD = second byte, third byte, fourth and fifth bytes divided by 100, sixth and seventh bytes divided by 100 )
1369
1370 0XA5 01 0A F9 C0 29 04 ~-~-AT+WMOD=1,10,-16,105(Need to convert -16 to -1600 for calculation，-1600(DEC)=FFFFFFFFFFFFF9C0(HEX)  FFFFFFFFFFFFF9C0(HEX) +10000(HEX)=F9C0(HEX))
1371
1372 0xA5 02 0A 02 ~-~- AT+WMOD=2,10,2  (AT+WMOD = second byte, third byte, fourth byte)
1373
1374 0xA5 FF ~-~- After the device receives it, upload the current alarm configuration (FPORT=8). Such as 01 0A 11 94 29 04 or 02 0A 02.
1375
1376
1377 = 5. Battery & How to replace =
1378
1379 == 5.1 Battery Type ==
1380
1381
1382 (((
1383 LHT65N is equipped with a 2400mAH Li-MnO2 (CR17505) battery . The battery is an un-rechargeable battery with low discharge rate targeting for up to 8~~10 years use. This type of battery is commonly used in IoT devices for long-term running, such as water meters.
1384 )))
1385
1386 (((
1387 The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
1388
1389
1390 [[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]
1391 )))
1392
1393 The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
1394
1395
1396 == 5.2 Replace Battery ==
1397
1398
1399 LHT65N has two screws on the back, Unscrew them, and changing the battery inside is ok. The battery is a general CR17450 battery. Any brand should be ok.
1400
1401 [[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]
1402
1403
1404 == 5.3 Battery Life Analyze ==
1405
1406
1407 (((
1408 Dragino battery-powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimated battery life:
1409 [[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]
1410 )))
1411
1412
1413 (((
1414 A full detail test report for LHT65N on different frequency can be found at : [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0>>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]
1415 )))
1416
1417
1418 = 6. FAQ =
1419
1420 == 6.1 How to use AT Command? ==
1421
1422
1423 LHT65N supports AT Command set.User can use a USB to TTL adapter plus the Program Cable to connect to LHT65 for using AT command, as below.
1424
1425 [[image:image-20220530085651-1.png||_mstalt="429949"]]
1426
1427
1428 **Connection:**
1429
1430 * (% style="background-color:yellow" %)**USB to TTL GND <~-~->GND**
1431 * (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> D+**
1432 * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1433
1434 (((
1435 In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LHT65N. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**) (%%)to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.
1436 )))
1437
1438
1439 Input password and ATZ to activate LHT65N,As shown below:
1440
1441 [[image:image-20220530095701-4.png||_mstalt="430014"]]
1442
1443
1444 AT Command List is as below:
1445
1446 AT+<CMD>? :  Help on <CMD>
1447
1448 AT+<CMD> :  Run <CMD>
1449
1450 AT+<CMD>=<value> :  Set the value
1451
1452 AT+<CMD>=? :  Get the value
1453
1454 AT+DEBUG:  Set more info output
1455
1456 ATZ:  Trig a reset of the MCU
1457
1458 AT+FDR:  Reset Parameters to Factory Default, Keys Reserve
1459
1460 AT+DEUI:  Get or Set the Device EUI
1461
1462 AT+DADDR:  Get or Set the Device Address
1463
1464 AT+APPKEY:  Get or Set the Application Key
1465
1466 AT+NWKSKEY:  Get or Set the Network Session Key
1467
1468 AT+APPSKEY:  Get or Set the Application Session Key
1469
1470 AT+APPEUI:  Get or Set the Application EUI
1471
1472 AT+ADR:  Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1473
1474 AT+TXP:  Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1475
1476 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)
1477
1478 AT+DCS:  Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1479
1480 AT+PNM:  Get or Set the public network mode. (0: off, 1: on)
1481
1482 AT+RX2FQ:  Get or Set the Rx2 window frequency
1483
1484 AT+RX2DR:  Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1485
1486 AT+RX1DL:  Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1487
1488 AT+RX2DL:  Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1489
1490 AT+JN1DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1491
1492 AT+JN2DL:  Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1493
1494 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1495
1496 AT+NWKID:  Get or Set the Network ID
1497
1498 AT+FCU:  Get or Set the Frame Counter Uplink
1499
1500 AT+FCD:  Get or Set the Frame Counter Downlink
1501
1502 AT+CLASS:  Get or Set the Device Class
1503
1504 AT+JOIN:  Join network
1505
1506 AT+NJS:  Get the join status
1507
1508 AT+SENDB:  Send hexadecimal data along with the application port
1509
1510 AT+SEND:  Send text data along with the application port
1511
1512 AT+RECVB:  Print last received data in binary format (with hexadecimal values)
1513
1514 AT+RECV:  Print last received data in raw format
1515
1516 AT+VER:  Get current image version and Frequency Band
1517
1518 AT+CFM:  Get or Set the confirmation mode (0-1)
1519
1520 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1521
1522 AT+SNR:  Get the SNR of the last received packet
1523
1524 AT+RSSI:  Get the RSSI of the last received packet
1525
1526 AT+TDC:  Get or set the application data transmission interval in ms
1527
1528 AT+PORT:  Get or set the application port
1529
1530 AT+DISAT:  Disable AT commands
1531
1532 AT+PWORD: Set password, max 9 digits
1533
1534 AT+CHS:  Get or Set Frequency (Unit: Hz) for Single Channel Mode
1535
1536 AT+CHE:  Get or Set eight channels mode,Only for US915,AU915,CN470
1537
1538 AT+PDTA:  Print the sector data from start page to stop page
1539
1540 AT+PLDTA:  Print the last few sets of data
1541
1542 AT+CLRDTA:  Clear the storage, record position back to 1st
1543
1544 AT+SLEEP:  Set sleep mode
1545
1546 AT+EXT:  Get or Set external sensor model
1547
1548 AT+BAT:  Get the current battery voltage in mV
1549
1550 AT+CFG:  Print all configurations
1551
1552 AT+WMOD:  Get or Set Work Mode
1553
1554 AT+ARTEMP:  Get or set the internal Temperature sensor alarm range
1555
1556 AT+CITEMP:  Get or set the internal Temperature sensor collection interval in min
1557
1558 AT+SETCNT:  Set the count at present
1559
1560 AT+RJTDC:  Get or set the ReJoin data transmission interval in min
1561
1562 AT+RPL:  Get or set response level
1563
1564 AT+TIMESTAMP:  Get or Set UNIX timestamp in second
1565
1566 AT+LEAPSEC:  Get or Set Leap Second
1567
1568 AT+SYNCMOD:  Get or Set time synchronization method
1569
1570 AT+SYNCTDC:  Get or set time synchronization interval in day
1571
1572 AT+PID:  Get or set the PID
1573
1574
1575 == 6.2 Where to use AT commands and Downlink commands ==
1576
1577
1578 **AT commands：**
1579
1580 [[image:image-20220620153708-1.png||_mstalt="429806" height="603" width="723"]]
1581
1582
1583 **Downlink commands:**
1584
1585
1586 (% style="color:blue" %)**TTN:**
1587
1588 [[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]
1589
1590
1591
1592 (% style="color:blue" %)**Helium：**
1593
1594 [[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]
1595
1596
1597
1598 (% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**
1599
1600
1601 [[image:image-20220615094850-6.png||_mstalt="433082"]]
1602
1603
1604 [[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]
1605
1606
1607
1608 (% style="color:blue" %)**Aws:**
1609
1610 [[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]
1611
1612
1613 == 6.3 How to change the uplink interval？ ==
1614
1615
1616 Please see this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/||_mstmutation="1" style="background-color: rgb(255, 255, 255);"]]
1617
1618
1619 == 6.4 How to use TTL-USB to connect a PC to input AT commands? ==
1620
1621
1622 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1623
1624 [[image:1655802313617-381.png||_mstalt="293917"]]
1625
1626
1627 (((
1628 In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600** (%%)to access to access serial console for LHT65N. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**(% style="color:red" %))(%%) to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.
1629 )))
1630
1631
1632 Input password and ATZ to activate LHT65N,As shown below:
1633
1634 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1635
1636
1637 == 6.5 How to use TTL-USB to connect PC to upgrade firmware? ==
1638
1639
1640 [[image:image-20220615153355-1.png||_mstalt="430222"]]
1641
1642
1643 (% style="color:blue" %)**Step1**(%%): Install [[TremoProgrammer>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AAAnJD_qGZ42bB52o4UmH9v9a/LHT65N%20Temperature%20%26%20Humidity%20Sensor/tool?dl=0&subfolder_nav_tracking=1]]  first.
1644
1645 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1646
1647
1648
1649 (% _mstmutation="1" style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1650
1651 First connect the four lines；(% style="display:none" %)
1652
1653 [[image:image-20220621170938-1.png||_mstalt="431340" height="413" width="419"]]，(% style="display:none" %)
1654
1655
1656 Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.
1657
1658 [[image:image-20220621170938-2.png||_mstalt="431704"]]
1659
1660
1661
1662 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1663
1664 [[image:image-20220615171334-6.png||_mstalt="431028"]]
1665
1666
1667 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1668
1669
1670 When this interface appears, it indicates that the download has been completed.
1671
1672 [[image:image-20220620160723-8.png||_mstalt="430703"]]
1673
1674
1675 Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.
1676
1677
1678 == 6.6 Using USB-TYPE-C to connect to the computer using the AT command ==
1679
1680
1681 [[image:image-20220623110706-1.png||_mstalt="427869"]]
1682
1683
1684 **UART Port of LHT65N:**
1685
1686 * (% class="mark" %)**PB0: RXD**
1687 * (% class="mark" %)**PB1: TXD**
1688 * (% class="mark" %)**GND**
1689
1690 [[image:image-20220623112117-4.png||_mstalt="428350" height="459" width="343"]]
1691
1692
1693 (((
1694 In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600** (%%)to access to access serial console for LHT65N. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**(% style="color:red" %))(%%) to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.
1695 )))
1696
1697
1698 Input password and ATZ to activate LHT65N,As shown below:
1699
1700 [[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]
1701
1702
1703 == 6.7 How to use  USB-TYPE-C to connect PC to upgrade firmware? ==
1704
1705
1706 [[image:image-20220623110706-1.png||_mstalt="427869"]]
1707
1708
1709 (% style="color:blue" %)**Step1**(%%): Install [[TremoProgrammer>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AAAnJD_qGZ42bB52o4UmH9v9a/LHT65N%20Temperature%20%26%20Humidity%20Sensor/tool?dl=0&subfolder_nav_tracking=1]]  first.
1710
1711 [[image:image-20220615170542-5.png||_mstalt="430638"]]
1712
1713
1714
1715 (% _mstmutation="1" style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)
1716
1717 First connect the four lines；
1718
1719 [[image:image-20220623113959-5.png||_mstalt="433485" height="528" width="397"]]
1720
1721 Connect A8 and GND with Dupont wire for a while and then separate，enter reset mode
1722
1723
1724
1725 (% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.
1726
1727 [[image:image-20220615171334-6.png||_mstalt="431028"]]
1728
1729
1730 Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.
1731
1732
1733 When this interface appears, it indicates that the download has been completed.
1734
1735 [[image:image-20220620160723-8.png||_mstalt="430703"]]
1736
1737
1738 Finally,Disconnect 3.3v，Connect A8 and GND with Dupont wire for a while and then separate，exit reset mode
1739
1740
1741 == 6.8 Why can't I see the datalog information ==
1742
1743
1744 ~1. The time is not aligned, and the correct query command is not used.
1745
1746 2. Decoder error, did not parse the datalog data, the data was filtered.
1747
1748
1749 = 7. Order Info =
1750
1751
1752 Part Number: (% style="color:#4f81bd" %)** LHT65N-XX-YY**
1753
1754 (% style="color:#4f81bd" %)**XX **(%%): The default frequency band
1755
1756 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
1757 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
1758 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
1759 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
1760 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
1761 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**US915**(%%): LoRaWAN US915 band
1762 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
1763 * (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
1764
1765 (% style="color:#4f81bd" %)**YY**(%%): Sensor Accessories
1766
1767 * (% style="color:red" %)**E3**(%%): External Temperature Probe
1768
1769 = 8. Packing Info =
1770
1771
1772 **Package Includes**:
1773
1774 * LHT65N Temperature & Humidity Sensor x 1
1775 * Optional external sensor
1776
1777 **Dimension and weight**:
1778
1779 * Device Size:  10 x 10 x 3.5 mm
1780 * Device Weight: 120.5g
1781
1782 = 9. Reference material =
1783
1784
1785 * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
1786
1787 = 10. FCC Warning =
1788
1789
1790 This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
1791
1792 (1) This device may not cause harmful interference；
1793
1794 (2) this device must accept any interference received, including interference that may cause undesired operation.

Applications

Navigation

Copyright ©2010-2024 Dragino Technology Co., LTD. All rights reserved
Dragino Wiki v2.0